Sliding door security bracket



FIG. 1 is a front elevational view of a sliding door security bracket showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the side opposite being a mirror image of that shown; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a sliding door security bracket, as shown and described. 